Union Pacific SD90MAC-H 8504 heads east with two other SD90MAC-Hs, and an EMD test car, at Highgrove, in Grand Terrace, California, on April 4, 1998. UP 8504 is the former Electro-Motive Division demonstrator 8204, which was displayed at EMD's 75th Anniversary Open House. This engine later got repainted into UP's standard Armour Yellow and Harbor Mist Gray paint scheme, and later was renumbered yet again to UP 8914.
